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[旧帖] 求助 这种算法怎么解 0.00雪花
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发表于: 2011-3-17 08:41 2165
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这是某软件的算法
本人菜鸟一个找到算法不知怎么解
希望牛人解答一下
00439DA0 /$ 8B4424 08 mov eax,ss:[esp+8]
00439DA4 |. 99 cdq
00439DA5 |. 83E2 03 and edx,3
00439DA8 |. 03C2 add eax,edx
00439DAA |. 55 push ebp
00439DAB |. 8B6C24 08 mov ebp,ss:[esp+8]
00439DAF |. C1F8 02 sar eax,2
00439DB2 |. 8D0440 lea eax,ds:[eax+eax*2]
00439DB5 |. 56 push esi
00439DB6 |. 894424 0C mov ss:[esp+C],eax
00439DBA |. 83C0 03 add eax,3
00439DBD |. 50 push eax ; /n
00439DBE |. 33F6 xor esi,esi ; |
00439DC0 |. 56 push esi ; |c => 00
00439DC1 |. 53 push ebx ; |s
00439DC2 |. E8 5B770000 call <jmp.&MSVCR80.memset> ; \memset
00439DC7 |. 83C4 0C add esp,0C
00439DCA |. 807D 00 3D cmp byte ptr ss:[ebp],3D
00439DCE |. 0F84 7B010000 je 00439F4F
00439DD4 |. 57 push edi
00439DD5 |> 3B7424 14 /cmp esi,ss:[esp+14]
00439DD9 |. 0F8D 6F010000 |jge 00439F4E
00439DDF |. 803C2E 0A |cmp byte ptr ds:[esi+ebp],0A
00439DE3 |. 75 09 |jnz short 00439DEE
00439DE5 |> 83C6 01 |/add esi,1
00439DE8 |. 803C2E 0A ||cmp byte ptr ds:[esi+ebp],0A
00439DEC |.^ 74 F7 |\je short 00439DE5
00439DEE |> 8BC6 |mov eax,esi
00439DF0 |. 99 |cdq
00439DF1 |. 83E2 03 |and edx,3
00439DF4 |. 03C2 |add eax,edx
00439DF6 |. C1F8 02 |sar eax,2
00439DF9 |. 8D0C43 |lea ecx,ds:[ebx+eax*2]
00439DFC |. 8D1408 |lea edx,ds:[eax+ecx]
00439DFF |. 8A042E |mov al,ds:[esi+ebp]
00439E02 |. 8AC8 |mov cl,al
00439E04 |. 80E9 41 |sub cl,41 ; Switch (cases 41..DB)
00439E07 |. 80F9 19 |cmp cl,19
00439E0A |. 77 04 |ja short 00439E10
00439E0C |. 8AC1 |mov al,cl
00439E0E |. EB 2F |jmp short 00439E3F
00439E10 |> 8AC8 |mov cl,al
00439E12 |. 80E9 61 |sub cl,61
00439E15 |. 80F9 19 |cmp cl,19
00439E18 |. 77 04 |ja short 00439E1E
00439E1A |. 2C 47 |sub al,47 ; Cases A2,A3,A4,A5,A6,A7,A8,A9,AA,AB,AC,AD,AE,AF,B0,B1,B2,B3,B4,B5,B6,B7,B8,B9,BA,BB of switch 00439E04
00439E1C |. EB 21 |jmp short 00439E3F
00439E1E |> 8AC8 |mov cl,al
00439E20 |. 80E9 30 |sub cl,30
00439E23 |. 80F9 09 |cmp cl,9
00439E26 |. 77 04 |ja short 00439E2C
00439E28 |. 04 04 |add al,4 ; Cases D2,D3,D4,D5,D6,D7,D8,D9,DA,DB of switch 00439E04
00439E2A |. EB 13 |jmp short 00439E3F
00439E2C |> 3C 2B |cmp al,2B ; Default case of switch 00439E04
00439E2E |. 75 04 |jnz short 00439E34
00439E30 |. B0 3E |mov al,3E
00439E32 |. EB 0B |jmp short 00439E3F
00439E34 |> 3C 2F |cmp al,2F
00439E36 |. 0F95C0 |setne al
00439E39 |. 2C 01 |sub al,1
00439E3B |. 24 40 |and al,40
00439E3D |. 04 FF |add al,0FF
00439E3F |> 0FBEF8 |movsx edi,al ; Cases 41,42,43,44,45,46,47,48,49,4A,4B,4C,4D,4E,4F,50,51,52,53,54,55,56,57,58,59,5A of switch 00439E04
00439E42 |. C1E7 12 |shl edi,12
00439E45 |. 893A |mov ds:[edx],edi
00439E47 |. 8A442E 01 |mov al,ds:[esi+ebp+1]
00439E4B |. 3C 3D |cmp al,3D
00439E4D |. 0F84 FB000000 |je 00439F4E
00439E53 |. 8AC8 |mov cl,al
00439E55 |. 80E9 41 |sub cl,41 ; Switch (cases 41..DB)
00439E58 |. 80F9 19 |cmp cl,19
00439E5B |. 77 04 |ja short 00439E61
00439E5D |. 8AC1 |mov al,cl
00439E5F |. EB 2F |jmp short 00439E90
00439E61 |> 8AC8 |mov cl,al
00439E63 |. 80E9 61 |sub cl,61
00439E66 |. 80F9 19 |cmp cl,19
00439E69 |. 77 04 |ja short 00439E6F
00439E6B |. 2C 47 |sub al,47 ; Cases A2,A3,A4,A5,A6,A7,A8,A9,AA,AB,AC,AD,AE,AF,B0,B1,B2,B3,B4,B5,B6,B7,B8,B9,BA,BB of switch 00439E55
00439E6D |. EB 21 |jmp short 00439E90
00439E6F |> 8AC8 |mov cl,al
00439E71 |. 80E9 30 |sub cl,30
00439E74 |. 80F9 09 |cmp cl,9
00439E77 |. 77 04 |ja short 00439E7D
00439E79 |. 04 04 |add al,4 ; Cases D2,D3,D4,D5,D6,D7,D8,D9,DA,DB of switch 00439E55
00439E7B |. EB 13 |jmp short 00439E90
00439E7D |> 3C 2B |cmp al,2B ; Default case of switch 00439E55
00439E7F |. 75 04 |jnz short 00439E85
00439E81 |. B0 3E |mov al,3E
00439E83 |. EB 0B |jmp short 00439E90
00439E85 |> 3C 2F |cmp al,2F
00439E87 |. 0F95C0 |setne al
00439E8A |. 2C 01 |sub al,1
00439E8C |. 24 40 |and al,40
00439E8E |. 04 FF |add al,0FF
00439E90 |> 0FBEC0 |movsx eax,al ; Cases 41,42,43,44,45,46,47,48,49,4A,4B,4C,4D,4E,4F,50,51,52,53,54,55,56,57,58,59,5A of switch 00439E55
00439E93 |. C1E0 0C |shl eax,0C
00439E96 |. 03F8 |add edi,eax
00439E98 |. 893A |mov ds:[edx],edi
00439E9A |. 8A442E 02 |mov al,ds:[esi+ebp+2]
00439E9E |. 3C 3D |cmp al,3D
00439EA0 |. 0F84 A8000000 |je 00439F4E
00439EA6 |. 8AC8 |mov cl,al
00439EA8 |. 80E9 41 |sub cl,41 ; Switch (cases 41..DB)
00439EAB |. 80F9 19 |cmp cl,19
00439EAE |. 77 04 |ja short 00439EB4
00439EB0 |. 8AC1 |mov al,cl
00439EB2 |. EB 2F |jmp short 00439EE3
00439EB4 |> 8AC8 |mov cl,al
00439EB6 |. 80E9 61 |sub cl,61
00439EB9 |. 80F9 19 |cmp cl,19
00439EBC |. 77 04 |ja short 00439EC2
00439EBE |. 2C 47 |sub al,47 ; Cases A2,A3,A4,A5,A6,A7,A8,A9,AA,AB,AC,AD,AE,AF,B0,B1,B2,B3,B4,B5,B6,B7,B8,B9,BA,BB of switch 00439EA8
00439EC0 |. EB 21 |jmp short 00439EE3
00439EC2 |> 8AC8 |mov cl,al
00439EC4 |. 80E9 30 |sub cl,30
00439EC7 |. 80F9 09 |cmp cl,9
00439ECA |. 77 04 |ja short 00439ED0
00439ECC |. 04 04 |add al,4 ; Cases D2,D3,D4,D5,D6,D7,D8,D9,DA,DB of switch 00439EA8
00439ECE |. EB 13 |jmp short 00439EE3
00439ED0 |> 3C 2B |cmp al,2B ; Default case of switch 00439EA8
00439ED2 |. 75 04 |jnz short 00439ED8
00439ED4 |. B0 3E |mov al,3E
00439ED6 |. EB 0B |jmp short 00439EE3
00439ED8 |> 3C 2F |cmp al,2F
00439EDA |. 0F95C0 |setne al
00439EDD |. 2C 01 |sub al,1
00439EDF |. 24 40 |and al,40
00439EE1 |. 04 FF |add al,0FF
00439EE3 |> 0FBEC0 |movsx eax,al ; Cases 41,42,43,44,45,46,47,48,49,4A,4B,4C,4D,4E,4F,50,51,52,53,54,55,56,57,58,59,5A of switch 00439EA8
00439EE6 |. C1E0 06 |shl eax,6
00439EE9 |. 03F8 |add edi,eax
00439EEB |. 893A |mov ds:[edx],edi
00439EED |. 8A442E 03 |mov al,ds:[esi+ebp+3]
00439EF1 |. 3C 3D |cmp al,3D
00439EF3 |. 74 59 |je short 00439F4E
00439EF5 |. 8AC8 |mov cl,al
00439EF7 |. 80E9 41 |sub cl,41 ; Switch (cases 41..DB)
00439EFA |. 80F9 19 |cmp cl,19
00439EFD |. 77 04 |ja short 00439F03
00439EFF |. 8AC1 |mov al,cl
00439F01 |. EB 2F |jmp short 00439F32
00439F03 |> 8AC8 |mov cl,al
00439F05 |. 80E9 61 |sub cl,61
00439F08 |. 80F9 19 |cmp cl,19
00439F0B |. 77 04 |ja short 00439F11
00439F0D |. 2C 47 |sub al,47 ; Cases A2,A3,A4,A5,A6,A7,A8,A9,AA,AB,AC,AD,AE,AF,B0,B1,B2,B3,B4,B5,B6,B7,B8,B9,BA,BB of switch 00439EF7
00439F0F |. EB 21 |jmp short 00439F32
00439F11 |> 8AC8 |mov cl,al
00439F13 |. 80E9 30 |sub cl,30
00439F16 |. 80F9 09 |cmp cl,9
00439F19 |. 77 04 |ja short 00439F1F
00439F1B |. 04 04 |add al,4 ; Cases D2,D3,D4,D5,D6,D7,D8,D9,DA,DB of switch 00439EF7
00439F1D |. EB 13 |jmp short 00439F32
00439F1F |> 3C 2B |cmp al,2B ; Default case of switch 00439EF7
00439F21 |. 75 04 |jnz short 00439F27
00439F23 |. B0 3E |mov al,3E
00439F25 |. EB 0B |jmp short 00439F32
00439F27 |> 3C 2F |cmp al,2F
00439F29 |. 0F95C0 |setne al
00439F2C |. 2C 01 |sub al,1
00439F2E |. 24 40 |and al,40
00439F30 |. 04 FF |add al,0FF
00439F32 |> 0FBEC0 |movsx eax,al ; Cases 41,42,43,44,45,46,47,48,49,4A,4B,4C,4D,4E,4F,50,51,52,53,54,55,56,57,58,59,5A of switch 00439EF7
00439F35 |. 03C7 |add eax,edi
00439F37 |. 8902 |mov ds:[edx],eax
00439F39 |. 8A4A 02 |mov cl,ds:[edx+2]
00439F3C |. 880A |mov ds:[edx],cl
00439F3E |. 83C6 04 |add esi,4
00439F41 |. 8842 02 |mov ds:[edx+2],al
00439F44 |. 803C2E 3D |cmp byte ptr ds:[esi+ebp],3D
00439F48 |.^ 0F85 87FEFFFF \jnz 00439DD5
00439F4E |> 5F pop edi ; 0012DBAC
00439F4F |> 8BC6 mov eax,esi
00439F51 |. 99 cdq
00439F52 |. 83E2 03 and edx,3
00439F55 |. 03C2 add eax,edx
00439F57 |. C1F8 02 sar eax,2
00439F5A |. 8D1443 lea edx,ds:[ebx+eax*2]
00439F5D |. 8A0C10 mov cl,ds:[eax+edx]
00439F60 |. 03C2 add eax,edx
00439F62 |. 8A50 02 mov dl,ds:[eax+2]
00439F65 |. 8810 mov ds:[eax],dl
00439F67 |. 5E pop esi
00439F68 |. 8848 02 mov ds:[eax+2],cl
00439F6B |. 8B4424 08 mov eax,ss:[esp+8]
00439F6F |. 5D pop ebp
00439F70 \. C3 retn
本人菜鸟一个找到算法不知怎么解
希望牛人解答一下
00439DA0 /$ 8B4424 08 mov eax,ss:[esp+8]
00439DA4 |. 99 cdq
00439DA5 |. 83E2 03 and edx,3
00439DA8 |. 03C2 add eax,edx
00439DAA |. 55 push ebp
00439DAB |. 8B6C24 08 mov ebp,ss:[esp+8]
00439DAF |. C1F8 02 sar eax,2
00439DB2 |. 8D0440 lea eax,ds:[eax+eax*2]
00439DB5 |. 56 push esi
00439DB6 |. 894424 0C mov ss:[esp+C],eax
00439DBA |. 83C0 03 add eax,3
00439DBD |. 50 push eax ; /n
00439DBE |. 33F6 xor esi,esi ; |
00439DC0 |. 56 push esi ; |c => 00
00439DC1 |. 53 push ebx ; |s
00439DC2 |. E8 5B770000 call <jmp.&MSVCR80.memset> ; \memset
00439DC7 |. 83C4 0C add esp,0C
00439DCA |. 807D 00 3D cmp byte ptr ss:[ebp],3D
00439DCE |. 0F84 7B010000 je 00439F4F
00439DD4 |. 57 push edi
00439DD5 |> 3B7424 14 /cmp esi,ss:[esp+14]
00439DD9 |. 0F8D 6F010000 |jge 00439F4E
00439DDF |. 803C2E 0A |cmp byte ptr ds:[esi+ebp],0A
00439DE3 |. 75 09 |jnz short 00439DEE
00439DE5 |> 83C6 01 |/add esi,1
00439DE8 |. 803C2E 0A ||cmp byte ptr ds:[esi+ebp],0A
00439DEC |.^ 74 F7 |\je short 00439DE5
00439DEE |> 8BC6 |mov eax,esi
00439DF0 |. 99 |cdq
00439DF1 |. 83E2 03 |and edx,3
00439DF4 |. 03C2 |add eax,edx
00439DF6 |. C1F8 02 |sar eax,2
00439DF9 |. 8D0C43 |lea ecx,ds:[ebx+eax*2]
00439DFC |. 8D1408 |lea edx,ds:[eax+ecx]
00439DFF |. 8A042E |mov al,ds:[esi+ebp]
00439E02 |. 8AC8 |mov cl,al
00439E04 |. 80E9 41 |sub cl,41 ; Switch (cases 41..DB)
00439E07 |. 80F9 19 |cmp cl,19
00439E0A |. 77 04 |ja short 00439E10
00439E0C |. 8AC1 |mov al,cl
00439E0E |. EB 2F |jmp short 00439E3F
00439E10 |> 8AC8 |mov cl,al
00439E12 |. 80E9 61 |sub cl,61
00439E15 |. 80F9 19 |cmp cl,19
00439E18 |. 77 04 |ja short 00439E1E
00439E1A |. 2C 47 |sub al,47 ; Cases A2,A3,A4,A5,A6,A7,A8,A9,AA,AB,AC,AD,AE,AF,B0,B1,B2,B3,B4,B5,B6,B7,B8,B9,BA,BB of switch 00439E04
00439E1C |. EB 21 |jmp short 00439E3F
00439E1E |> 8AC8 |mov cl,al
00439E20 |. 80E9 30 |sub cl,30
00439E23 |. 80F9 09 |cmp cl,9
00439E26 |. 77 04 |ja short 00439E2C
00439E28 |. 04 04 |add al,4 ; Cases D2,D3,D4,D5,D6,D7,D8,D9,DA,DB of switch 00439E04
00439E2A |. EB 13 |jmp short 00439E3F
00439E2C |> 3C 2B |cmp al,2B ; Default case of switch 00439E04
00439E2E |. 75 04 |jnz short 00439E34
00439E30 |. B0 3E |mov al,3E
00439E32 |. EB 0B |jmp short 00439E3F
00439E34 |> 3C 2F |cmp al,2F
00439E36 |. 0F95C0 |setne al
00439E39 |. 2C 01 |sub al,1
00439E3B |. 24 40 |and al,40
00439E3D |. 04 FF |add al,0FF
00439E3F |> 0FBEF8 |movsx edi,al ; Cases 41,42,43,44,45,46,47,48,49,4A,4B,4C,4D,4E,4F,50,51,52,53,54,55,56,57,58,59,5A of switch 00439E04
00439E42 |. C1E7 12 |shl edi,12
00439E45 |. 893A |mov ds:[edx],edi
00439E47 |. 8A442E 01 |mov al,ds:[esi+ebp+1]
00439E4B |. 3C 3D |cmp al,3D
00439E4D |. 0F84 FB000000 |je 00439F4E
00439E53 |. 8AC8 |mov cl,al
00439E55 |. 80E9 41 |sub cl,41 ; Switch (cases 41..DB)
00439E58 |. 80F9 19 |cmp cl,19
00439E5B |. 77 04 |ja short 00439E61
00439E5D |. 8AC1 |mov al,cl
00439E5F |. EB 2F |jmp short 00439E90
00439E61 |> 8AC8 |mov cl,al
00439E63 |. 80E9 61 |sub cl,61
00439E66 |. 80F9 19 |cmp cl,19
00439E69 |. 77 04 |ja short 00439E6F
00439E6B |. 2C 47 |sub al,47 ; Cases A2,A3,A4,A5,A6,A7,A8,A9,AA,AB,AC,AD,AE,AF,B0,B1,B2,B3,B4,B5,B6,B7,B8,B9,BA,BB of switch 00439E55
00439E6D |. EB 21 |jmp short 00439E90
00439E6F |> 8AC8 |mov cl,al
00439E71 |. 80E9 30 |sub cl,30
00439E74 |. 80F9 09 |cmp cl,9
00439E77 |. 77 04 |ja short 00439E7D
00439E79 |. 04 04 |add al,4 ; Cases D2,D3,D4,D5,D6,D7,D8,D9,DA,DB of switch 00439E55
00439E7B |. EB 13 |jmp short 00439E90
00439E7D |> 3C 2B |cmp al,2B ; Default case of switch 00439E55
00439E7F |. 75 04 |jnz short 00439E85
00439E81 |. B0 3E |mov al,3E
00439E83 |. EB 0B |jmp short 00439E90
00439E85 |> 3C 2F |cmp al,2F
00439E87 |. 0F95C0 |setne al
00439E8A |. 2C 01 |sub al,1
00439E8C |. 24 40 |and al,40
00439E8E |. 04 FF |add al,0FF
00439E90 |> 0FBEC0 |movsx eax,al ; Cases 41,42,43,44,45,46,47,48,49,4A,4B,4C,4D,4E,4F,50,51,52,53,54,55,56,57,58,59,5A of switch 00439E55
00439E93 |. C1E0 0C |shl eax,0C
00439E96 |. 03F8 |add edi,eax
00439E98 |. 893A |mov ds:[edx],edi
00439E9A |. 8A442E 02 |mov al,ds:[esi+ebp+2]
00439E9E |. 3C 3D |cmp al,3D
00439EA0 |. 0F84 A8000000 |je 00439F4E
00439EA6 |. 8AC8 |mov cl,al
00439EA8 |. 80E9 41 |sub cl,41 ; Switch (cases 41..DB)
00439EAB |. 80F9 19 |cmp cl,19
00439EAE |. 77 04 |ja short 00439EB4
00439EB0 |. 8AC1 |mov al,cl
00439EB2 |. EB 2F |jmp short 00439EE3
00439EB4 |> 8AC8 |mov cl,al
00439EB6 |. 80E9 61 |sub cl,61
00439EB9 |. 80F9 19 |cmp cl,19
00439EBC |. 77 04 |ja short 00439EC2
00439EBE |. 2C 47 |sub al,47 ; Cases A2,A3,A4,A5,A6,A7,A8,A9,AA,AB,AC,AD,AE,AF,B0,B1,B2,B3,B4,B5,B6,B7,B8,B9,BA,BB of switch 00439EA8
00439EC0 |. EB 21 |jmp short 00439EE3
00439EC2 |> 8AC8 |mov cl,al
00439EC4 |. 80E9 30 |sub cl,30
00439EC7 |. 80F9 09 |cmp cl,9
00439ECA |. 77 04 |ja short 00439ED0
00439ECC |. 04 04 |add al,4 ; Cases D2,D3,D4,D5,D6,D7,D8,D9,DA,DB of switch 00439EA8
00439ECE |. EB 13 |jmp short 00439EE3
00439ED0 |> 3C 2B |cmp al,2B ; Default case of switch 00439EA8
00439ED2 |. 75 04 |jnz short 00439ED8
00439ED4 |. B0 3E |mov al,3E
00439ED6 |. EB 0B |jmp short 00439EE3
00439ED8 |> 3C 2F |cmp al,2F
00439EDA |. 0F95C0 |setne al
00439EDD |. 2C 01 |sub al,1
00439EDF |. 24 40 |and al,40
00439EE1 |. 04 FF |add al,0FF
00439EE3 |> 0FBEC0 |movsx eax,al ; Cases 41,42,43,44,45,46,47,48,49,4A,4B,4C,4D,4E,4F,50,51,52,53,54,55,56,57,58,59,5A of switch 00439EA8
00439EE6 |. C1E0 06 |shl eax,6
00439EE9 |. 03F8 |add edi,eax
00439EEB |. 893A |mov ds:[edx],edi
00439EED |. 8A442E 03 |mov al,ds:[esi+ebp+3]
00439EF1 |. 3C 3D |cmp al,3D
00439EF3 |. 74 59 |je short 00439F4E
00439EF5 |. 8AC8 |mov cl,al
00439EF7 |. 80E9 41 |sub cl,41 ; Switch (cases 41..DB)
00439EFA |. 80F9 19 |cmp cl,19
00439EFD |. 77 04 |ja short 00439F03
00439EFF |. 8AC1 |mov al,cl
00439F01 |. EB 2F |jmp short 00439F32
00439F03 |> 8AC8 |mov cl,al
00439F05 |. 80E9 61 |sub cl,61
00439F08 |. 80F9 19 |cmp cl,19
00439F0B |. 77 04 |ja short 00439F11
00439F0D |. 2C 47 |sub al,47 ; Cases A2,A3,A4,A5,A6,A7,A8,A9,AA,AB,AC,AD,AE,AF,B0,B1,B2,B3,B4,B5,B6,B7,B8,B9,BA,BB of switch 00439EF7
00439F0F |. EB 21 |jmp short 00439F32
00439F11 |> 8AC8 |mov cl,al
00439F13 |. 80E9 30 |sub cl,30
00439F16 |. 80F9 09 |cmp cl,9
00439F19 |. 77 04 |ja short 00439F1F
00439F1B |. 04 04 |add al,4 ; Cases D2,D3,D4,D5,D6,D7,D8,D9,DA,DB of switch 00439EF7
00439F1D |. EB 13 |jmp short 00439F32
00439F1F |> 3C 2B |cmp al,2B ; Default case of switch 00439EF7
00439F21 |. 75 04 |jnz short 00439F27
00439F23 |. B0 3E |mov al,3E
00439F25 |. EB 0B |jmp short 00439F32
00439F27 |> 3C 2F |cmp al,2F
00439F29 |. 0F95C0 |setne al
00439F2C |. 2C 01 |sub al,1
00439F2E |. 24 40 |and al,40
00439F30 |. 04 FF |add al,0FF
00439F32 |> 0FBEC0 |movsx eax,al ; Cases 41,42,43,44,45,46,47,48,49,4A,4B,4C,4D,4E,4F,50,51,52,53,54,55,56,57,58,59,5A of switch 00439EF7
00439F35 |. 03C7 |add eax,edi
00439F37 |. 8902 |mov ds:[edx],eax
00439F39 |. 8A4A 02 |mov cl,ds:[edx+2]
00439F3C |. 880A |mov ds:[edx],cl
00439F3E |. 83C6 04 |add esi,4
00439F41 |. 8842 02 |mov ds:[edx+2],al
00439F44 |. 803C2E 3D |cmp byte ptr ds:[esi+ebp],3D
00439F48 |.^ 0F85 87FEFFFF \jnz 00439DD5
00439F4E |> 5F pop edi ; 0012DBAC
00439F4F |> 8BC6 mov eax,esi
00439F51 |. 99 cdq
00439F52 |. 83E2 03 and edx,3
00439F55 |. 03C2 add eax,edx
00439F57 |. C1F8 02 sar eax,2
00439F5A |. 8D1443 lea edx,ds:[ebx+eax*2]
00439F5D |. 8A0C10 mov cl,ds:[eax+edx]
00439F60 |. 03C2 add eax,edx
00439F62 |. 8A50 02 mov dl,ds:[eax+2]
00439F65 |. 8810 mov ds:[eax],dl
00439F67 |. 5E pop esi
00439F68 |. 8848 02 mov ds:[eax+2],cl
00439F6B |. 8B4424 08 mov eax,ss:[esp+8]
00439F6F |. 5D pop ebp
00439F70 \. C3 retn
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